granova® already holds a KOMO® certification for the application as concrete aggregate in the Netherlands.

granova® for concrete

Recycled concrete and recycled aggregates have been used in concrete production for many years. The basis for their use in structural concrete are the European Norms EN 206 and EN 12620, which were introduced more than a decade ago, and which explicitly include secondary and recycled aggregates. The defined requirements also apply to industrial by-products like IBAA.

European standards for concrete

Table 1 provides an overview of the relevant European standards pertaining to the use of aggregates for structural concrete. In the centre are the EN 206 for concrete and EN 12620.

granova standards for concrete

Table 1: Overview of relevant technical regulation

EN 206 provides information concerning the specification, performance, production and conformity of concrete. It is amended on a national level, with associated standards and guidelines. EN 206 applies for structural concrete in situ (ready mixed), for precast structures and structural precast products for buildings and civil engineering works.

EN 12620 specifies the properties of normal weight (≥ 2 t/m³) aggregates and filler aggregates for use of concrete in accordance with EN 206. It covers aggregates obtained by processing natural, manufactured or recycled materials and mixtures of these. Thus, it also applies to industrial by-products like IBAA.

Concrete products: applicable standards

EN 206 and EN 12620 are not mandatory for concrete products. If there is a specific standard for a product it will define the requirements of the aggregates in this standard. The examples of product standards named in table 2 allow for natural, recycled or industrially manufactured aggregates. Here, the replacement percentage is not limited but only dependent on the producer’s mix design and required performance of the end product.

applicable standards

Table 2: Concrete products and according European Norms

granova® quality = new opportunities

From both a technical and environmental point of view, IBAA of granova® quality already fulfils the requirements for use as aggregate in concrete and in concrete products. The REMEX subsidiary HEROS Sluiskil B.V., as the market leader in the Netherlands for treating bottom ash, produces granova® aggregates for concrete in accordance with Dutch and EU regulations.